RILEM TC 162-TDF: 'Test and design methods for steel fibre reinforced concrete'-σ-ε-design method

摘要

The design of steel fibre reinforced concrete according to the σ-ε-method is based on the same fundamentals as the design of normal reinforced concrete. The proposed method is valid for steel fibre concrete with compressive strengths of up to C50/60. Steel fibres can also be used in high strength concrete, i.e. concrete with f_(fck)≥50 N/mm~2. However, care should be taken that the steel fibres do not break in a brittle way before being pulled out. The European pre-standard ENV 1992-1-1 (Eurocode 2: Design of Concrete Structures - Part 1: General rules and rules for - buildings) has been used as a general framework for this design method proposed. It must be emphasised that these calculation guidelines are intended for cases in which the steel fibres are used for structural purposes and not e.g. for slabs on grade. They also do not apply for other applications such as those in which increased resistance to plastic shrinkage, increased resistance to abrasion or impact, etc. are aimed for.